What do I need?

Hello tochsii!  Emotiva makes a small AV/surround sound processor. If can do a 7.1 system. It sounds very fine indeed and is the heart of my Living Room system. It handles phono cartridges also; The model is MC-700. You can save some $$ by buying a "factory refurbished" one, if available. You will also need at least a five channel (stereo front and rear + center channel) power amp. Six channels if you use a passive subwoofer. Of course you'll need rear channel speakers and a center channel speaker. These are not difficult to build. Try DIYing  them. If you want to go 7.1 yoou'll need two more power amp channels and a set of side speakers. I have run such a system, but don't think the improvement is worth the complictions and cost. 5.1 is good enough for me. Home Theater enthusiasts are up to 13.2 systems. You have been warned! Enjoy the music.   

@ghdprentice is correct, separate HT and audio systems is best. You need different gear to reproduce music vs explosions.

🤷‍♂️  Mho, music is basically controlled noises....much like a weed is a plant you don't want

There

or

Hear ;)

Since ours has to exist in the same space, one just has to adapt ones' mains to handle both with aplomb....make judicious selections of how and what to connect, and it can (and does) work....

This topic discussed many times before. The best way is to separate home theater system from the audio system, so optimal way would be to have home theater receiver connect to own speakers.